Switching to ELC coolant?

[fffowler]

My "new to me" 6.0 has only 35,000 miles on it. My question is do I need to do a flush before switching to ELC coolant and adding a coolant filter? I cant see the system being too bad as of yet. Coming from a 97 7.3 and a gasser this issue is new to me. Thanks for any help!

[jesilvas]

Yes. You definitely need to flush BIG time before switching. It involves chemical flushes and then distilled water flushes.

[smokersteve]

Yes, do a very thorough flush before you put in the coolant and distilled water.

[fffowler]

Should I have to do both chemical flushes and the distilled? Could it possibly be that scaled and gummed up with so few miles?

[STRKTHS73]

i would do both i swapped to cat coolant at 30k an u would not believe the crap that came outta there and i had the same thought u did trust me do both the flushes and take your time to get it good an clean

[LNS4x4]

It took me weeks to get my flush done the way I wanted it. But at the end of the day it was worth it when I started getting nice clear water draining out of the truck.

[fffowler]

Thanks for the welcome and the good advice guys. Much appreciated!